How to install docker on linux machine

I am documenting my journey in devops Here is how to install docker on linux machine. Step-by-Step: Install Docker on Ubuntu 1. Update your packages sudo apt-get update sudo apt-get install -y ca-certificates curl gnupg lsb-release 2. Add Docker’s official GPG key sudo mkdir -p /etc/apt/keyrings curl -fsSL https://download.docker.com/linux/ubuntu/gpg | \ sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg 3. Set up the Docker repository echo \ "deb [arch=$(dpkg --print-architecture) \ signed-by=/etc/apt/keyrings/docker.gpg] \ https://download.docker.com/linux/ubuntu \ $(lsb_release -cs) stable" | \ sudo tee /etc/apt/sources.list.d/docker.list > /dev/null 4. Update again and install Docker sudo apt-get update sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin 5. Verify Docker is working sudo docker run hello-world 6. (Optional) Run Docker without sudo sudo usermod -aG docker $USER newgrp docker # or log out and back in docker run hello-world

sudo apt-get update
sudo apt-get install -y ca-certificates curl gnupg lsb-release

sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | \
  sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

echo \
  "deb [arch=$(dpkg --print-architecture) \
  signed-by=/etc/apt/keyrings/docker.gpg] \
  https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

sudo docker run hello-world

sudo usermod -aG docker $USER
newgrp docker  # or log out and back in
docker run hello-world

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